diff --git a/pyinjective/ofac.py b/pyinjective/ofac.py
index fea8d96d..4cbf664b 100644
--- a/pyinjective/ofac.py
+++ b/pyinjective/ofac.py
@@ -34,7 +34,7 @@ async def download_ofac_list(cls):
                     ofac_list = json.loads(text_content)
                     ofac_file_path = cls.get_ofac_list_path()
                     with open(ofac_file_path, "w") as f:
-                        json.dump(ofac_list, f)
+                        json.dump(ofac_list, f, indent=2)
                         f.write("\n")
                     return
             except (aiohttp.ClientError, json.JSONDecodeError) as e: